Table · dataset · 2017
Times of transits and occultations of WASP-12b
Listed in IVOA Registry (Virtual Observatory)
We present new transit and occultation times for the hot Jupiter WASP-12b.
Description
The data are compatible with a constant period derivative: P.=-29+/-3ms/yr and P/P.=3.2Myr. However, it is difficult to tell whether we have observed orbital decay or a portion of a 14-year apsidal precession cycle.
If interpreted as decay, the star's tidal quality parameter Q_star_ is about 2*10^5^. If interpreted as precession, the planet's Love number is 0.44+/-0.10. Orbital decay appears to be the more parsimonious model: it is favored by {Delta}_{chi}^2^_=5.5 despite having two fewer free parameters than the precession model.
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The decay model implies that WASP-12 was discovered within the final ~0.2% of its existence, which is an unlikely coincidence but harmonizes with independent evidence that the planet is nearing disruption. Precession does not invoke any temporal coincidence, but it does require some mechanism to maintain an eccentricity of {approx}0.002 in the face of rapid tidal circularization. To distinguish unequivocally between decay and precession will probably require a few more years of monitoring.
Particularly helpful will be occultation timing in 2019 and thereafter.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/4 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2017AJ....154....4P ui.adsabs.harvard.edu/abs/2017AJ....154....4P ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/aj/154/4 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/aj/154/4 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |